3,155 results found
    1. Developmental Biology
    2. Stem Cells and Regenerative Medicine

    Generic injuries are sufficient to induce ectopic Wnt organizers in Hydra

    Jack F Cazet et al.
    Injuries activate the oral identity-specifying canonical Wnt signaling pathway in Hydra, which can trigger head regeneration in permissive tissue contexts created by the absence of pre-existing organizers.
    1. Evolutionary Biology
    2. Genetics and Genomics

    Demographic reconstruction from ancient DNA supports rapid extinction of the great auk

    Jessica E Thomas et al.
    Reconstruction of great auk population dynamics suggests that hunting pressure alone could have been responsible for their extinction, demonstrating that even abundant, widespread species can be vulnerable to intense exploitation.
    1. Genetics and Genomics

    Population-scale proteome variation in human induced pluripotent stem cells

    Bogdan Andrei Mirauta et al.
    Protein abundance changes across human-induced pluripotent stem cell lines reflect genetic variation across donors, with underlying mechanisms including modulation of RNA expression and modification of protein-coding sequences.
    1. Cancer Biology
    2. Chromosomes and Gene Expression

    Loss of Kat2a enhances transcriptional noise and depletes acute myeloid leukemia stem-like cells

    Ana Filipa Domingues et al.
    Histone acetyl-transferase Kat2a preserves leukemia stem cells through frequent transcriptional firing of metabolic and regulatory gene promoters and maintenance of a largely invariant self-renewal program.
    1. Evolutionary Biology
    2. Genetics and Genomics

    Gene expression variability in human and chimpanzee populations share common determinants

    Benjamin Jung Fair et al.
    Similar evolutionary pressures on gene expression between human and chimpanzee populations contribute to the observation that inter-individual gene expression variability is similar across genes in these species.
    1. Computational and Systems Biology
    2. Physics of Living Systems

    Persistence, period and precision of autonomous cellular oscillators from the zebrafish segmentation clock

    Alexis B Webb et al.
    Time-lapse recording and theoretical analysis of individual cells isolated from the zebrafish segmentation clock reveal that they behave as self-sustained, autonomous oscillators with distinctive noisy dynamics.
    1. Computational and Systems Biology
    2. Chromosomes and Gene Expression

    Stochastic modelling, Bayesian inference, and new in vivo measurements elucidate the debated mtDNA bottleneck mechanism

    Iain G Johnston et al.
    New modelling, statistics, and experiments show that cellular populations of mitochondrial DNA (mtDNA) evolve during development according to solvable stochastic dynamics involving binomial partitioning and random turnover, facilitating a predictive and quantitative theory of the mtDNA bottleneck.
    1. Computational and Systems Biology
    2. Neuroscience

    T2N as a new tool for robust electrophysiological modeling demonstrated for mature and adult-born dentate granule cells

    Marcel Beining et al.
    T2N, a novel interface between Matlab, TREES toolbox and NEURON, was used to generate compartmental models that reproduce the electrophysiology of dentate granule cells over a multitude of species, experimental conditions and developmental stages.
    1. Evolutionary Biology

    Metabolic co-dependence drives the evolutionarily ancient Hydra–Chlorella symbiosis

    Mayuko Hamada et al.
    The symbiotic relationship between Hydra and Chlorella is driven by metabolic co-dependence and characterized by changes in the photobiont genome in terms of lack of genes essential in free-living algae.
    1. Neuroscience

    The manifold structure of limb coordination in walking Drosophila

    Brian D DeAngelis et al.
    During walking and turning, the fruit fly Drosophila uses variable limb coordination patterns, which exist on a low-dimensional, continuous manifold.

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